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Partial merge of develop to experimental

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Does not include #2336 as the file has been moved out from underneath it:
will do this separately
This commit is contained in:
David Baker 2019-01-03 15:02:58 +00:00
parent 00405e7f22
commit 7d161de35b
77 changed files with 3526 additions and 598 deletions
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61
src/matrix-to.js
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@ -15,6 +15,8 @@ limitations under the License.
*/
import MatrixClientPeg from "./MatrixClientPeg";
import isIp from "is-ip";
import utils from 'matrix-js-sdk/lib/utils';
export const host = "matrix.to";
export const baseUrl = `https://${host}`;
@ -90,7 +92,9 @@ export function pickServerCandidates(roomId) {
// Rationale for popular servers: It's hard to get rid of people when
// they keep flocking in from a particular server. Sure, the server could
// be ACL'd in the future or for some reason be evicted from the room
// however an event like that is unlikely the larger the room gets.
// however an event like that is unlikely the larger the room gets. If
// the server is ACL'd at the time of generating the link however, we
// shouldn't pick them. We also don't pick IP addresses.
// Note: we don't pick the server the room was created on because the
// homeserver should already be using that server as a last ditch attempt
@ -104,12 +108,29 @@ export function pickServerCandidates(roomId) {
// The receiving user can then manually append the known-good server to
// the list and magically have the link work.
const bannedHostsRegexps = [];
let allowedHostsRegexps = [new RegExp(".*")]; // default allow everyone
if (room.currentState) {
const aclEvent = room.currentState.getStateEvents("m.room.server_acl", "");
if (aclEvent && aclEvent.getContent()) {
const getRegex = (hostname) => new RegExp("^" + utils.globToRegexp(hostname, false) + "$");
const denied = aclEvent.getContent().deny || [];
denied.forEach(h => bannedHostsRegexps.push(getRegex(h)));
const allowed = aclEvent.getContent().allow || [];
allowedHostsRegexps = []; // we don't want to use the default rule here
allowed.forEach(h => allowedHostsRegexps.push(getRegex(h)));
}
}
const populationMap: {[server:string]:number} = {};
const highestPlUser = {userId: null, powerLevel: 0, serverName: null};
for (const member of room.getJoinedMembers()) {
const serverName = member.userId.split(":").splice(1).join(":");
if (member.powerLevel > highestPlUser.powerLevel) {
if (member.powerLevel > highestPlUser.powerLevel && !isHostnameIpAddress(serverName)
&& !isHostInRegex(serverName, bannedHostsRegexps) && isHostInRegex(serverName, allowedHostsRegexps)) {
highestPlUser.userId = member.userId;
highestPlUser.powerLevel = member.powerLevel;
highestPlUser.serverName = serverName;
@ -125,8 +146,9 @@ export function pickServerCandidates(roomId) {
const beforePopulation = candidates.length;
const serversByPopulation = Object.keys(populationMap)
.sort((a, b) => populationMap[b] - populationMap[a])
.filter(a => !candidates.includes(a));
for (let i = beforePopulation; i <= MAX_SERVER_CANDIDATES; i++) {
.filter(a => !candidates.includes(a) && !isHostnameIpAddress(a)
&& !isHostInRegex(a, bannedHostsRegexps) && isHostInRegex(a, allowedHostsRegexps));
for (let i = beforePopulation; i < MAX_SERVER_CANDIDATES; i++) {
const idx = i - beforePopulation;
if (idx >= serversByPopulation.length) break;
candidates.push(serversByPopulation[idx]);
@ -134,3 +156,34 @@ export function pickServerCandidates(roomId) {
return candidates;
}
function getHostnameFromMatrixDomain(domain) {
if (!domain) return null;
// The hostname might have a port, so we convert it to a URL and
// split out the real hostname.
const parser = document.createElement('a');
parser.href = "https://" + domain;
return parser.hostname;
}
function isHostInRegex(hostname, regexps) {
hostname = getHostnameFromMatrixDomain(hostname);
if (!hostname) return true; // assumed
if (regexps.length > 0 && !regexps[0].test) throw new Error(regexps[0]);
return regexps.filter(h => h.test(hostname)).length > 0;
}
function isHostnameIpAddress(hostname) {
hostname = getHostnameFromMatrixDomain(hostname);
if (!hostname) return false;
// is-ip doesn't want IPv6 addresses surrounded by brackets, so
// take them off.
if (hostname.startsWith("[") && hostname.endsWith("]")) {
hostname = hostname.substring(1, hostname.length - 1);
}
return isIp(hostname);
}